249271938 has 16 divisors (see below), whose sum is σ = 553937760. Its totient is φ = 83090628.

The previous prime is 249271937. The next prime is 249271943. The reversal of 249271938 is 839172942.

249271938 is a `hidden beast` number, since 2 + 492 + 71 + 93 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 249271893 and 249271902.

It is not an unprimeable number, because it can be changed into a prime (249271931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2308020 + ... + 2308127.

It is an arithmetic number, because the mean of its divisors is an integer number (34621110).

Almost surely, 2^249271938 is an apocalyptic number.

249271938 is an abundant number, since it is smaller than the sum of its proper divisors (304665822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249271938 is a wasteful number, since it uses less digits than its factorization.

249271938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616158 (or 4616152 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 249271938 is about 15788.3481719906. The cubic root of 249271938 is about 629.3483965795.

The spelling of 249271938 in words is "two hundred forty-nine million, two hundred seventy-one thousand, nine hundred thirty-eight".